EP 1298863 A3 20040128 - Method and apparatus for performing an in-service upgrade of a switching fabric of a network element
Title (en)
Method and apparatus for performing an in-service upgrade of a switching fabric of a network element
Title (de)
Verfahren und Vorrichtung zur Durchführung einer "In-Betrieb" Aktualisierung eines Koppelfeldes in einem Netzelement
Title (fr)
Procédé et dispositif pour réaliser une extension en service d'une unité de commutation d'un élément de réseau
Publication
Application
Priority
- US 32534101 P 20010927
- US 15145102 A 20020520
Abstract (en)
[origin: EP1298863A2] A method and apparatus for performing an in-service upgrade of a switching fabric of a network element is described. Network traffic is denominated in cells as it passes through the network element. Prior to the upgrade, an internal header is provided to direct the communication of a cell through the network element. The internal header has internal routing information to direct the routing of the cell through the switching fabric of the network element. Additional internal routing information compatible with upgraded components of a network element is added to the cells passing through the network element. The additional internal routing information is dependent on the internal routing information previously provided in the internal header, but differs from the internal routing information in that it supports the upgraded components of the network element. Thus, prior to the upgrading of a switching fabric in a network element, the internal routing information is used to route the cells through the non-upgraded network components, while, after the upgrading of the switching fabric, the additional internal routing information is used to route cells through the upgraded components of the network element. <IMAGE>
IPC 1-7
IPC 8 full level
H04L 12/56 (2006.01)
CPC (source: EP US)
H04L 12/5601 (2013.01 - EP US); H04L 45/00 (2013.01 - EP US); H04L 45/563 (2013.01 - EP US); H04L 45/566 (2013.01 - EP US); H04L 49/254 (2013.01 - EP US); H04L 49/256 (2013.01 - EP US); H04L 49/3009 (2013.01 - EP US); H04L 49/309 (2013.01 - EP US); H04L 49/45 (2013.01 - EP US); H04L 49/552 (2013.01 - EP US)
Citation (search report)
- [X] WO 0030300 A1 20000525 - SIEMENS AG [DE], et al
- [A] EP 0961442 A1 19991201 - IBM [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
EP 1298863 A2 20030402; EP 1298863 A3 20040128; EP 1298863 B1 20070103; DE 60217248 D1 20070215; DE 60217248 T2 20070705; US 2003058854 A1 20030327; US 7502373 B2 20090310
DOCDB simple family (application)
EP 02292312 A 20020920; DE 60217248 T 20020920; US 15145102 A 20020520